Abstract
In order to reduce the large rocks produced by blasting of hillside open-pit mine with heterogeneous and complex rock mass in arid area, based on the lithology characteristics of complex rock mass of the Dabancheng Limestone Hillside Open-pit Mine in Hongshun, Xinjiang, the key technology for blasting in homogeneous and complex rock mass hillside open-pit mine is proposed in this paper. We can conclude from the experiment that (1) it is preferable to have a detonation network that realizes multi-stage millisecond differential, multiple combinations of detonating unit forms, and variable blast hole connection lines; (2) the blasting parameters, charge structure and millisecond interval are optimized to make the blasting efficiency to be effective continually; (3) the radial tensile stress of reflected tensile wave is enhanced and the rock breaking mechanism of heterogeneous complicated rock mass is revealed.
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